8
9
4
5
1
2
9
8
3
4
2
3
7
5
8
9
2
7
1
2
8
2
5
7
1
8
5

This Sudoku Puzzle has 61 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Pair, Naked Single, Naked Triple, Hidden Pair, Skyscraper, Full House techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 6 / Column 6 → 8 (Hidden Single)
  2. Row 3 / Column 5 → 8 (Hidden Single)
  3. Row 9 / Column 3 → 8 (Hidden Single)
  4. Row 4 / Column 3 → 2 (Hidden Single)
  5. Row 2 / Column 7 → 8 (Hidden Single)
  6. Row 2 / Column 6 → 5 (Hidden Single)
  7. Row 6 / Column 4 → 5 (Hidden Single)
  8. Row 1 / Column 7 → 5 (Hidden Single)
  9. Row 6 / Column 2 → 1 (Hidden Single)
  10. Row 2 / Column 9 → 1 (Hidden Single)
  11. Row 3 / Column 3 → 1 (Hidden Single)
  12. Locked Candidates Type 1 (Pointing): 7 in b4 => r5c79<>7
  13. Locked Candidates Type 2 (Claiming): 7 in c9 => r12c8,r3c7<>7
  14. Row 2 / Column 4 → 7 (Hidden Single)
  15. Naked Pair: 4,6 in r5c9,r6c8 => r4c78,r5c7<>6, r5c7<>4
  16. Row 5 / Column 7 → 1 (Naked Single)
  17. Row 4 / Column 4 → 1 (Hidden Single)
  18. Row 9 / Column 5 → 1 (Hidden Single)
  19. Naked Triple: 4,6,9 in r45c2,r6c1 => r5c1<>4, r5c13<>6, r5c3<>9
  20. Locked Candidates Type 1 (Pointing): 9 in b4 => r8c2<>9
  21. Hidden Pair: 2,7 in r8c78 => r8c78<>3, r8c78<>4, r8c78<>6
  22. Skyscraper: 6 in r2c2,r6c1 (connected by r26c8) => r13c1,r45c2<>6
  23. Row 4 / Column 2 → 9 (Naked Single)
  24. Row 4 / Column 6 → 6 (Naked Single)
  25. Row 5 / Column 5 → 9 (Full House)
  26. Row 5 / Column 2 → 4 (Naked Single)
  27. Row 3 / Column 6 → 4 (Naked Single)
  28. Row 8 / Column 6 → 9 (Full House)
  29. Row 5 / Column 9 → 6 (Naked Single)
  30. Row 6 / Column 1 → 6 (Naked Single)
  31. Row 6 / Column 8 → 4 (Full House)
  32. Row 8 / Column 3 → 6 (Naked Single)
  33. Row 1 / Column 3 → 7 (Naked Single)
  34. Row 8 / Column 2 → 3 (Naked Single)
  35. Row 2 / Column 2 → 6 (Full House)
  36. Row 2 / Column 8 → 3 (Full House)
  37. Row 5 / Column 3 → 5 (Naked Single)
  38. Row 5 / Column 1 → 7 (Full House)
  39. Row 7 / Column 3 → 9 (Full House)
  40. Row 8 / Column 4 → 4 (Naked Single)
  41. Row 9 / Column 1 → 4 (Naked Single)
  42. Row 7 / Column 1 → 5 (Full House)
  43. Row 1 / Column 9 → 4 (Naked Single)
  44. Row 3 / Column 9 → 7 (Naked Single)
  45. Row 4 / Column 8 → 7 (Naked Single)
  46. Row 4 / Column 7 → 3 (Full House)
  47. Row 7 / Column 9 → 3 (Naked Single)
  48. Row 9 / Column 9 → 9 (Full House)
  49. Row 8 / Column 8 → 2 (Naked Single)
  50. Row 1 / Column 8 → 6 (Full House)
  51. Row 8 / Column 7 → 7 (Full House)
  52. Row 3 / Column 7 → 2 (Full House)
  53. Row 9 / Column 7 → 6 (Naked Single)
  54. Row 7 / Column 7 → 4 (Full House)
  55. Row 7 / Column 5 → 6 (Full House)
  56. Row 1 / Column 5 → 3 (Full House)
  57. Row 9 / Column 4 → 3 (Full House)
  58. Row 3 / Column 1 → 3 (Naked Single)
  59. Row 1 / Column 1 → 2 (Full House)
  60. Row 1 / Column 4 → 9 (Full House)
  61. Row 3 / Column 4 → 6 (Full House)
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